Histochemical and ultrastructural analyses of the lubrication systems in the olfactory organs of soft-shelled turtle
| Autor: | Makoto Yokosuka, Nobuaki Nakamuta, Yoshio Yamamoto, Shoko Nakamuta, Kazumi Taniguchi |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Olfactory system Nasal cavity Pathology medicine.medical_specialty Vomeronasal organ 040301 veterinary sciences Olfactory Receptor Cell Wildlife Science Olfaction Biology Receptors Odorant 0403 veterinary science 03 medical and health sciences Exocrine Glands 0302 clinical medicine Microscopy Electron Transmission medicine Animals Full Paper electron microscopy General Veterinary chemoreception 04 agricultural and veterinary sciences Epithelium Turtles Cell biology reptile Nasal Mucosa medicine.anatomical_structure associated glands Ultrastructure Female supporting cells Nasal Cavity Olfactory epithelium 030217 neurology & neurosurgery |
| Zdroj: | The Journal of Veterinary Medical Science |
| ISSN: | 1347-7439 0916-7250 |
| Popis: | In general, the nasal cavity of turtles is divided into two chambers: the upper chamber, lined with the olfactory epithelium containing ciliated olfactory receptor cells, and the lower chamber, lined with the vomeronasal epithelium containing microvillous receptor cells. In the nasal cavity of soft-shelled turtles, however, differences between the upper and lower chamber epithelia are unclear due to the presence of ciliated receptor cells in both epithelia. In the olfactory organ of vertebrates, the surface of sensory epithelium is covered with secretory products of associated glands and supporting cells, playing important roles in the olfaction by dissolving odorants and transporting them to the olfactory receptors. Here, the associated glands and supporting cells in the olfactory organ of soft-shelled turtles were analyzed histochemically and ultrastructurally. The upper chamber epithelium possessed associated glands, constituted by cells containing serous secretory granules; whereas, the lower chamber epithelium did not. In the upper chamber epithelium, secretory granules filled the supranuclear region of supporting cells, while most of the granules were distributed near the free border of supporting cells in the lower chamber epithelium. The secretory granules in the supporting cells of both epithelia were seromucous, but alcian blue stained them differently from each other. In addition, distinct expression of carbohydrates was suggested by the differences in lectin binding. These data indicate the quantitative and qualitative differences in the secretory properties between the upper and lower chamber epithelia, suggesting their distinct roles in the olfaction. |
| Databáze: | OpenAIRE |
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